package com.atguigu.gmall.realtime.app.func;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.gmall.realtime.common.GmallConfig;
import com.atguigu.gmall.realtime.utils.DimUtil;
import org.apache.commons.lang3.StringUtils;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Collection;
import java.util.Set;

/**
 * Author: Felix
 * Date: 2022/1/18
 * Desc: 将维度侧输出流数据写到phoenix维度表中
 */
public class DimSink extends RichSinkFunction<JSONObject> {
    private Connection conn;
    @Override
    public void open(Configuration parameters) throws Exception {
        //注册驱动
        Class.forName("org.apache.phoenix.jdbc.PhoenixDriver");
        //创建连接
        conn = DriverManager.getConnection(GmallConfig.PHOENIX_SERVER);
    }

    @Override
    public void invoke(JSONObject jsonObj, Context context) throws Exception {
        //获取输出目的地       dim_base_trademark
        String sinkTable = jsonObj.getString("sink_table");
        //获取受影响的维度数据
        JSONObject dataJsonObj = jsonObj.getJSONObject("data");
        //生成upsert语句
        String upsertSql = genUpsertSql(sinkTable,dataJsonObj);

        System.out.println("向phoenix表中插入数据的SQL:" + upsertSql);

        //通过jdbc的方式 执行upsert
        PreparedStatement ps = null;
        try {
            //获取数据库操作对象
            ps = conn.prepareStatement(upsertSql);
            //执行sql语句
            ps.executeUpdate();
            //注意：再向phoenix表中插入数据的时候，需要手动提交事务
            conn.commit();
        } catch (SQLException e) {
            e.printStackTrace();
            throw new RuntimeException("向phoenix表中插入数据发生了异常~~~");
        } finally {
            //释放资源
            if(ps != null){
                ps.close();
            }
        }

        //如果维度数据发生了修改操作，将Redis中缓存的数据清除掉
        if("update".equals(jsonObj.getString("type"))){
            DimUtil.deleteCached(sinkTable,dataJsonObj.getString("id"));
        }
    }

    //{"tm_name":"aabb","id":12}
    private String genUpsertSql(String tableName, JSONObject dataJsonObj) {
        Set<String> keys = dataJsonObj.keySet();
        Collection<Object> values = dataJsonObj.values();
        String upsertSql = "upsert into "+ GmallConfig.HBASE_SCHEMA+"."+tableName
            +"("+ StringUtils.join(keys,",") +") " +
            "values('"+StringUtils.join(values,"','")+"')";
        return upsertSql;
    }
}
